Repeater system



W. E. BEATTY.

REPEATEB SYSTEM- APPLICATION FILED SEPT. 30. m9.

1,426,810, Patented Aug 22, 1922.

Wf/fiam Z 564/?) UNITED STATES PATENT OFFICE.

WILLIAM E. BEATTY, OF BAYSIDE, NEW YORK, ASSIGNOR T0 WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

REPEATER SYSTEM.

Application filed September 30, 1918.

T 0 all whom it may concern Be it known that I, TVILLIAM E. BEATTY, a citizen of the United States, residing at Bayside, Long Island, in the borough of Queens, State of New York, have invented certain new and useful Improvements in Repeater Systems, of which the following is a full, clear, concise, and exact description.

The invention relates to a telephone system in which a one-way repeater is reversibly connected to the line to provide for the two-way transmission of signals.

An object oftheinvention is to establish the repeater connections automatically in responseto current such as voice current impressed on the line. The invention provides for each of the two lines a control relay operated preferably by voice current. A further object of the invention is to insure that signaling current approaching the repeater in one direction shall operate the proper voice relay and not the other relay. This is accomplished by a short circuit across the line and located between the two relays. Current approaching the repeater from either direction after passing one relay is short-circuited and thereby prevented from reaching the other relay. The short circuit is automatically removed from across the lines and connected across the relay. which should not be operated, so that the latter is rendered inoperative and the control maintained by the proper relay. One of the relays is associated with-the output side of the repeater, whereby the current which operates it'is amplified by the repeater, thereby avoiding the necessity of a separate amplifier-for this purpose.

For further details reference may be made to the drawings, in which Fig. 1 shows one embodiment of the invention; and Fig. 2 illustrates a conventional audion amplifier.

In Fig. 1 of the drawings, the repeater 1, which is here shown as of the mechanical type, although any other type may lbe'used instead, is shown to be reversibly connected between the lines 2 and 3 to provide for the two-way transmission of signals. The connection of the repeater 1 to the lines 2 and 3 is made through electromagnetic switches t and 5 which are controlled by the relays 6 and 7, the latter two being in turn controlled by the control relay 8. The circuit Specification of Letters Patent. Patented Arug. 22, 1922.

Serial No. 256,293.

connections are also controlled by a relay 9 similar to the relay 8. If desired, the relay 8 may be provided with an amplifier A shown in detail in Fig. 2. It is unnecessary to provide an amplifier for the relay 9 since the current which operates it will be amplified by the repeater 1. The relays 8 and 9 are responsive to alternating or pulsating current, such as voice current, to cause vibra tion of their normally closed contacts 10 and 11 respectively. The invention is not limited to any particular form of voice relay and as illustrating one type of relay that may be employed, reference is made to the patent to Brown, 1,l85,4:72, May 30, 1916.

The repeater 1 is normally connected to the lines 2 and 3 but cannot transmit current therebetween because of the shunt 1.6.

With the switch contacts in the position shown in drawings. this transmission may take place in the-direction from the line 2 to the line 3; after the short circuit 16 has been removed. The circuits may be traced as follows: line 2, ari'nature 12, input side of the repeater, armature let, other side of the line 2. The current coming in over the line 2 after actuating); the repeater 1 and being thereby amplified actuates relay and sets the contact 11 into vibration. The vibration oi contact 11 sufficiently increases the resistance in circuit with switch 15 so that the latter drops its armature 16, thereby remow ing the short circuit from the output side of the repeater and placing this short circuit across the relay 8, which is thereby rendered inoperative. With the armature 16 in'its lowermost position, the repeater 1 may deliver amplified current through the armatures 17 and 18 out upon the line The location of the short-circuiting armature 16 between the relays 8 and 9 insures that if the relay 9 operates first, this relay will maintain control of the connections, the relay 8 being rendered inoperative. If voice current originates in line 3, it is necessary that the connections of the repeater 1 to the lines be reversed, in order that current may be repeated from line 3 to line 2. This reversal of connections takes place as follows: current coming in over the line 3 takes a circuit through armature 17, then through armature 16 which is in parallel with a circuit including the secondary of repeating coil 19 and relay 9, to voice relay 8 and armature 18 to the other side of-line Substantially all? the "current passes through armature leans may-enema operated. The enei' gization of relay 8 sets its contact 10 into vibration, Which sufliciently increases the resistance in circuit with solenoid 20 of -ela 6 so that theann'atu're 21 assumes its alternate positionr The circuit'for' the solenoid 20 may be traced as follows: from ground throughcontact, 10, lead 22, arma-' ture' 23, solenoid 'QOQ'battery c imax-011ml.- The armature 21; when in its'alternate position, connects the battery 24' to the sole noids of switches 4 and 5, therebyenergiz'lngl these switches and reversing the connectionsof the'repeater 1 to t-helinesQand Thearxnature' 21 "in its alternate position alsecennects the battery"2& over lead 25 through solenoid of relay 7 i to round, thereupon moving armatures23 and 26 to their alternate positions. This disconnects the gro nd 2? from solenoid 28 of relay" 6 and connects solenoid 28" toground over thelead 22 and through the vibratingcontact l0. The-inward movement of armature 23 removes 'the'solenoid 20 from theco1itrol of thecontact' 10 and connects the solen'oid 20 tog-round 29. This shift in the controlofvibrating;contact 10 'With respect to the' solenoids 20 and 28""ot' relay (his madenee ssar 'b reason ofthe fast that,

the switches and 5 being energized dueto the armature 21 assuming its alternate posltion'fthe" repeater is connected totransgj init current in t-he" reversed" direction between the lines? and-"3, with respect to the direction it could transmit currentbe tween these lines" with the connections as shown in the draiwinlgsi fWitlr the output side of the repeater connected to line 2,

, current "originating inth'is lineand alp proaching p'eater connections desired the" repeater will reverse Stillconsidering the case where'roice cur rent" originate in the line 3 with there:

peat'er "connections as shown in the drawinge, the relay 8 havii'ig o fiera'ted'i the connect' on'softhe repeater 1 tothe' lin'esfi'aiikl as previousl described, curside'of the repeater and from the output "id' iif' the sane 9' theit'opei'ates as previously described to lease the shortcircuit from across theout parrsiu' of the repeater, short cirhuitiiig rili -8, "therebjy rendering it inoperative.

3% .o m over? the line 31 Wh en current in the nested acr ss the Output side of the re rent coining in overthe line'3 now passes 'hthe*armatiires, 1'2 and" letflto the" peater. The repeater then remains in condition to transmit current in 'a' "direction from line 3 to lin'eIn case current subsequently originates in line2, t-h'e repeater connections are reversed as has been previously described. 7

Vhat is claimed is: 1 1. The combination of two lines, a repeater adapted to be reversibly connected therebetween, means for controlling the'kcon j; nectionof said repeater to said lines and for connecting'said repeater in position to for controlling said iepeatergfl and con-1 nections for energizing said relay with amplified ci'irrent from said repeateit 3. A repeater systeincomprising two lines, asin'gle amplifyingpath adapted to be reversibly connected therebetwe en and comprising a repeaterQ- two relaysinthe output circuitota said repeater fora-c011 trolling'the repeater connections, and a con troll able shortcircuit between said relays":

l. A repeater system comprising twolll a single amplifying-path-adaptedto be} reversibly connected therebetweeni and comprising' a repeater, two relaysin the output circuit of said repeater foreontrol z ling the 'repeater connections; and a" short/ circuit between said relays-and adapted to be controlled'by one of said relays:

A repeater system compi'ising two lines; a unidirectional current" conducting amplif ing means, switches and 1 inputisand output amplifier leads for vrevers'ibly con necting said means to {said "lines; electromagnetic meansfor controlling" said SWitOhBSy and a relay responsiveftof amplified" current from said amplifying means for" controlling said. electromagnetic means, said switches comprising" contacts co'nneotjed to said lines and arinatures' connected to said leads.

6. A line"; repeater; *means forconnect ing said repeater to'said line througho'ut the absence of signaling current from the line and for operatiyely associating eitherflthe input side or the output sideof said re peat er fwitli said line, and" means responsive to amplified urrent frtmsaid repeater for coiitrolling said'first mentiened 'm'e'a'ns;

" 7." ii repeater systemcomprising? a lih'eg a repeater therefor, a circuit in t said line, and means responsive to amplifying current from said repeater for controlling said circuit, said means comprising a contact vibrating while currents are being transmitted in one direction through said repeater, and said shunt circuit being between the output side of said repeater and a distant station.

8. A repeater system comprising a line, a repeater therefor, a circuit in shunt to the output'side of said. repeater and means responsive to amplified current from said repeater for controlling said circuit, said shunt circuit being between the output side of said rep eater'and a distant station, and

being closed when not transmitting.

9. A. repeater system comprising a line, an energy amplifying repeater therefor, a relay responsive to current impressed on said line, a circuit in shunt to said relay,

and means responsive to amplified current from said repeater for controlling said circuit said shunt circuit,being'between the output side of said repeater and a distant station. i 10. A line, an energy amplifying repeater th erefor a relay in the output circuit of said repeater, a movable contact forconnecting said relay into or out of circuit, and means responsive to amplified current from said repeater} for controlling said contact said movable contact being "between the output sideot said repeaterand a 'di stant station. 11. The combination, of two lines, a repeater therebetween, a relay responsive to current originating in oneof said linesbut initially unresponsive to current coming in over the other of said lines, and means responsive to current impressed on said other line to reverse the connections of said repeater with respect to said lines whereby said initially unresponsive relay is finally responsive to current impressed on said other line after it has actuated said repeater.

12. The combination of two lines, a repeater therebetween, a plurality of relays for controlling the connections 0t said repeater to said lines, both of said relays being in the output circuit of said repeater, and means comprising a movable armature tor rendering one of said relays unresponsive to current approaching the input side of said repeater while permitting the other relay to respond to current approaching the output side of said repeater.

13. The combination of two lines, a repeater adapted to be reversibly connected therebetween, a plurality of relays for controlling the connections of said repeater to said lines, two of said relays being in the output circuit of said repeater, and means comprising a movable armature for rendering one of said relays unresponsive to current approaching said repeater by way of its input circuit and for rendering the other relay unresponsive to current approaching said repeater by way of its output circuit, said r lays being" otherwise responsive to current approaching said repeater for controlling the connection of said repeater to said lines.

ii. A line, a repeater therefor, a relay associated therewith, a movable'contact adapted to shunt either the output circuit of said repeater or said relay and a second relay responsive'to amplified current from said repeater for controlling said contact.

A ]ine, a repeater therefor, a relay associated therewith, a movable contact adapted to shunt either the output circuit of said repeater orsaid relay, and a second relay responsive to amplified current from' said repeater and adapted to remove the shunt from across said output circuit and to place a shunt about said first-mentioned relay.

16. Two lines, a repeater, switching mechanism for reversibly connecting said repeater to said lines, a relay controlling said switching mechanism and comprising two solenoids, a relay having a'movable contact, means for interchangeably connecting said movable contact in circuit with one or with the other of said solenoids whereby the repeater connections are reversed when incoming current approaches the repeater by way ot its output circuit, and means responsive to amplified current from said repeater for controlling said relay having a movable contact.

' 17. Two lines, a repeater, switching means for reversibly connecting"said repeater to said lines, a relay for operating said switching means, and means comprising a second relay responsive to amplified current from said repeater for rendering said first-mentioned relay inoperative.

18. A two-way repeater system comprising two lines, a repeater normally connected thereto, reversing switching contacts in the input circuit and in the output circuit of said repeater, electromagnetic means controlling said contacts, and a plurality of relays betweensaid repeater and said output circuit contacts for controlling said electromagnetic means, and connections whereby one of said relays is adapted to control the operation of the other relay.

19. A two-way repeater system comprising two lines, a repeater adapted to be reversibly connected thereto, and means comprising a single voice operated relay device responsive to amplified current from said repeater for reversing the repeater connections for transmission in either direction between said lines.

20. A line, a repeater, means for operatively associating either the input side or the output side of Said repeater with said line, and means responsive to amplified ourrent-from said'lrepeater for controlling said first mention.ed means, the second mentioned means comprising; a single relayrarmature and 1 circuit" connections controlled thereby I Wherebyin one position of SELICL armature the I first-mentioned: means is caused-to connect the input side of said repeater to said line, and in vanother position 'ofisaid armature the firstmentioned means is caused to connect the outputside ofsaidwrepeater to said line.

21; Theicombination-of twolines, a repeater means forreversibly connecting said repeater between said lines, and means compr singaa rel-ayior controlling the connectionotsaidrepeater; to said lines, said re laybeing connectedxtofltheoutput side of said repeater for energizationby amplified currentsufrom said repeater, said first mentioned means comprising incoming and outgoing repeater leads and electromagnetic switches haying armatures connected to said leads and having contacts connected. to said lines; I v a r a 22. combination of two lines,va repeater adapted to be reversibly connected therebetween gandmeans comprising a relay for controlling the connection of'said repeater to saidlines said relay being connected to the outputside ofsaid repeater for energi zationbyamplified currentsfrom said re-'- eater and" said means com risin a sin 19 relay. armature and circuit connections coni I trolled therebyflwhereby inone position of said armature said repeater is adapted to transmit currents in one direction and in another position of saidarmature said repeatergis adapted. to transmit currents in the, reverse direction.

I 25.,A repeating lines a single amplifyingpath comprising 23. The. combination 10f trvovlines ia re- I pewter; means for reversibly connecting-said repeater-between, sald 111165, a; relay; responsive to currentapproaching 1 said repeater in either directions for controllingsaid repeata er, and connections, for energ zing said relay with amplified current from said repeater, said first mentioned meanscompris n 1IlOOIIl1I1gHa-Hd outgo ng repeater leads an electromagnetic sWitches-havin iarmatures r connected to said leadsiandt having contacts connected to (said lines; p

24. Arepeating systemcomprising. atline,

a repeater, means for operatively associating either. thewinput' sideiorthe output SldQ'Ofygj sa1d repeaterwith said lineya plurality of alternating current relays 01; controlling saldmeans, oneo'f said-relays being respon:

'sive to amplified current, fromisaid repeater, i

system" comprising two.

and-,zmeans. comprising connections whereby, one of: saidrelaysrenders another of said relays: inoperative.

a repeater, switch contacts for reversibly, 3;.

I connecting a said; repeater between said lines,

an alternating current relay. responsive to ampl fied current from sa1drepeater,j a sec-j and. alternating. current relay, means como pris ng said relays for 7 controlling said. con 'tacts and. means comprising connections,

WILLIAM E; BEA TYJ In witnesswhereofil hereunto subscribe 

